Circulation of Trypanosoma cruzi TcI in wild populations and those with a tendency toward domiciliation of Panstrongylus geniculatus (Latreille, 1811) (Hemiptera; Reduviidae) in the department of Atlántico, Colombia.

Authors

Yeisson Cera-Vallejo, Claudia Romero-Vivas, Andrew K Falconar, Roberto García-Alzate, Daisy Lozano-Arias

Published in

Revista peruana de medicina experimental y salud publica. Volume 43. Issue 1. Pages 83-89. Mar 06, 2026. Epub Mar 06, 2026.

Abstract

The TcI genotype of Trypanosoma cruzi was identified in wild populations and those with a tendency toward domiciliation of Panstrongylus geniculatus in the department of Atlántico, Colombia. Through active searching and light traps in rural and urban areas of three municipalities, 33 specimens of P. geniculatus were captured: Usiacurí (2), Piojó (2), and Tubará (29), the latter collected in five households. DNA from the digestive content was analyzed by PCR using molecular markers (DNAk, Mini-Exon, 18S, DNAr). Infection by T. cruzi was evidenced in 75% of the specimens (25/33), all from Tubará, with exclusive identification of the TcI genotype. Additionally, entomological indices were calculated, with infestation, colonization, and natural infection indices of 60%, 33%, and 86%, respectively. These findings constitute the first report of T. cruzi TcI in the department of Atlántico and the first record of P. geniculatus in Usiacurí, highlighting a potential risk to Colombian public health.

PMID:
42424287
Bibliographic data and abstract were imported from PubMed on 10 Jul 2026.

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